1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
5 #include "truerendercontrol.hh"
7 #include "screeninfo.hh"
9 #include "rendertexture.hh"
14 #endif // HAVE_STDLIB_H
16 #include "../src/gettext.h"
17 #define _(str) gettext(str)
22 TrueRenderControl::TrueRenderControl(int screen)
23 : RenderControl(screen),
28 const ScreenInfo *info = display->screenInfo(_screen);
29 XImage *timage = XCreateImage(**display, info->visual(), info->depth(),
30 ZPixmap, 0, NULL, 1, 1, 32, 0);
31 printf("Initializing TrueColor RenderControl\n");
33 unsigned long red_mask, green_mask, blue_mask;
35 // find the offsets for each color in the visual's masks
36 red_mask = timage->red_mask;
37 green_mask = timage->green_mask;
38 blue_mask = timage->blue_mask;
40 while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
41 while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
42 while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
44 _red_shift = _green_shift = _blue_shift = 8;
45 while (red_mask) { red_mask >>= 1; _red_shift--; }
46 while (green_mask) { green_mask >>= 1; _green_shift--; }
47 while (blue_mask) { blue_mask >>= 1; _blue_shift--; }
51 TrueRenderControl::~TrueRenderControl()
53 printf("Destroying TrueColor RenderControl\n");
56 void TrueRenderControl::drawGradientBackground(
57 Surface &sf, const RenderTexture &texture) const
60 int w = sf.size().width(), h = sf.size().height();
63 const ScreenInfo *info = display->screenInfo(_screen);
64 XImage *im = XCreateImage(**display, info->visual(), info->depth(),
65 ZPixmap, 0, NULL, w, h, 32, 0);
66 im->byte_order = endian;
67 pixel32 *data = new pixel32[h*w];
70 switch (texture.gradient()) {
71 case RenderTexture::Vertical:
72 verticalGradient(sf, texture, data);
74 case RenderTexture::Diagonal:
75 diagonalGradient(sf, texture, data);
77 case RenderTexture::CrossDiagonal:
78 crossDiagonalGradient(sf, texture, data);
81 printf("unhandled gradient\n");
84 if (texture.relief() == RenderTexture::Flat && texture.border()) {
85 r = texture.borderColor().red();
86 g = texture.borderColor().green();
87 b = texture.borderColor().blue();
88 current = (r << default_red_shift)
89 + (g << default_green_shift)
90 + (b << default_blue_shift);
91 for (off = 0, x = 0; x < w; ++x, off++) {
92 *(data + off) = current;
93 *(data + off + ((h-1) * w)) = current;
95 for (off = 0, x = 0; x < h; ++x, off++) {
96 *(data + (off * w)) = current;
97 *(data + (off * w) + w - 1) = current;
101 if (texture.relief() != RenderTexture::Flat) {
102 if (texture.bevel() == RenderTexture::Bevel1) {
103 for (off = 1, x = 1; x < w - 1; ++x, off++)
104 highlight(data + off,
105 data + off + (h-1) * w,
106 texture.relief()==RenderTexture::Raised);
107 for (off = 0, x = 0; x < h; ++x, off++)
108 highlight(data + off * w,
109 data + off * w + w - 1,
110 texture.relief()==RenderTexture::Raised);
113 if (texture.bevel() == RenderTexture::Bevel2) {
114 for (off = 2, x = 2; x < w - 2; ++x, off++)
115 highlight(data + off + w,
116 data + off + (h-2) * w,
117 texture.relief()==RenderTexture::Raised);
118 for (off = 1, x = 1; x < h-1; ++x, off++)
119 highlight(data + off * w + 1,
120 data + off * w + w - 2,
121 texture.relief()==RenderTexture::Raised);
125 reduceDepth(im, data);
127 im->data = (char*) data;
136 void TrueRenderControl::verticalGradient(Surface &sf,
137 const RenderTexture &texture,
143 int w = sf.size().width(), h = sf.size().height();
145 dr = (float)(texture.secondary_color().red() - texture.color().red());
148 dg = (float)(texture.secondary_color().green() - texture.color().green());
151 db = (float)(texture.secondary_color().blue() - texture.color().blue());
154 for (int y = 0; y < h; ++y) {
155 r = texture.color().red() + (int)(dr * y);
156 g = texture.color().green() + (int)(dg * y);
157 b = texture.color().blue() + (int)(db * y);
158 current = (r << default_red_shift)
159 + (g << default_green_shift)
160 + (b << default_blue_shift);
161 for (int x = 0; x < w; ++x, ++data)
166 void TrueRenderControl::diagonalGradient(Surface &sf,
167 const RenderTexture &texture,
171 float drx, dgx, dbx, dry, dgy, dby;
173 int w = sf.size().width(), h = sf.size().height();
175 for (int y = 0; y < h; ++y) {
176 drx = (float)(texture.secondary_color().red() - texture.color().red());
180 dgx = (float)(texture.secondary_color().green() - texture.color().green());
184 dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
187 for (int x = 0; x < w; ++x, ++data) {
188 r = texture.color().red() + ((int)(drx * x) + (int)(dry * y))/2;
189 g = texture.color().green() + ((int)(dgx * x) + (int)(dgy * y))/2;
190 b = texture.color().blue() + ((int)(dbx * x) + (int)(dby * y))/2;
191 current = (r << default_red_shift)
192 + (g << default_green_shift)
193 + (b << default_blue_shift);
199 void TrueRenderControl::crossDiagonalGradient(Surface &sf,
200 const RenderTexture &texture,
204 float drx, dgx, dbx, dry, dgy, dby;
206 int w = sf.size().width(), h = sf.size().height();
208 for (int y = 0; y < h; ++y) {
209 drx = (float)(texture.secondary_color().red() - texture.color().red());
213 dgx = (float)(texture.secondary_color().green() - texture.color().green());
217 dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
220 for (int x = w; x > 0; --x, ++data) {
221 r = texture.color().red() + ((int)(drx * (x-1)) + (int)(dry * y))/2;
222 g = texture.color().green() + ((int)(dgx * (x-1)) + (int)(dgy * y))/2;
223 b = texture.color().blue() + ((int)(dbx * (x-1)) + (int)(dby * y))/2;
224 current = (r << default_red_shift)
225 + (g << default_green_shift)
226 + (b << default_blue_shift);
232 void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
234 // since pixel32 is the largest possible pixel size, we can share the array
237 pixel16 *p = (pixel16*) data;
238 switch (im->bits_per_pixel) {
240 if ((_red_offset != default_red_shift) ||
241 (_blue_offset != default_blue_shift) ||
242 (_green_offset != default_green_shift)) {
243 printf("cross endian conversion\n");
244 for (y = 0; y < im->height; y++) {
245 for (x = 0; x < im->width; x++) {
246 r = (data[x] >> default_red_shift) & 0xFF;
247 g = (data[x] >> default_green_shift) & 0xFF;
248 b = (data[x] >> default_blue_shift) & 0xFF;
249 data[x] = (r << _red_offset) + (g << _green_offset) +
257 for (y = 0; y < im->height; y++) {
258 for (x = 0; x < im->width; x++) {
259 r = (data[x] >> default_red_shift) & 0xFF;
261 g = (data[x] >> default_green_shift) & 0xFF;
262 g = g >> _green_shift;
263 b = (data[x] >> default_blue_shift) & 0xFF;
264 b = b >> _blue_shift;
265 p[x] = (r << _red_offset) + (g << _green_offset) + (b << _blue_offset);
268 p += im->bytes_per_line/2;
272 printf("your bit depth is currently unhandled\n");
276 void TrueRenderControl::highlight(pixel32 *x, pixel32 *y, bool raised) const
288 r = (*up >> default_red_shift) & 0xFF;
290 g = (*up >> default_green_shift) & 0xFF;
292 b = (*up >> default_blue_shift) & 0xFF;
294 if (r > 255) r = 255;
295 if (g > 255) g = 255;
296 if (b > 255) b = 255;
297 *up = (r << default_red_shift) + (g << default_green_shift)
298 + (b << default_blue_shift);
300 r = (*down >> default_red_shift) & 0xFF;
301 r = (r >> 1) + (r >> 2);
302 g = (*down >> default_green_shift) & 0xFF;
303 g = (g >> 1) + (g >> 2);
304 b = (*down >> default_blue_shift) & 0xFF;
305 b = (b >> 1) + (b >> 2);
306 *down = (r << default_red_shift) + (g << default_green_shift)
307 + (b << default_blue_shift);
310 void TrueRenderControl::drawBackground(Surface& sf,
311 const RenderTexture &texture) const
313 assert(_screen == sf._screen);
314 assert(_screen == texture.color().screen());
316 if (texture.gradient() == RenderTexture::Solid)
317 drawSolidBackground(sf, texture);
319 drawGradientBackground(sf, texture);